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After federal charges, Intrade shuts out US

WASHINGTON — Intrade, the online prediction market that gained popularity as an informal oddsmaker for the presidential election, shut itself to US customers Monday after regulators charged it with illegally facilitating bets on future economic data, the price of gold, and even acts of war.

Hours after the Commodity Futures Trading Commission filed a complaint in federal court, Intrade posted in its user forum and on its news page that it could no longer allow US residents to trade ‘‘due to legal and regulatory pressures.’’

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US residents must begin closing their accounts and withdrawing their funds immediately, the website said. It said customers must resolve open predictions by Dec. 23 or the site would assign them ‘‘fair market value’’ and close them.

The CFTC’s civil complaint charged that Intrade and its operator solicited customers to trade investment contracts that technically are options. Options must be traded on approved, regulated exchanges.

‘‘Today’s action should make it clear that we will intervene in the ‘prediction’ markets, wherever they may be based, when their US activities violate’’ laws and rules enforced by the agency, CFTC enforcement director David Meister said in a statement.

By requiring that options be traded on approved exchanges, Meister said, regulators can ‘‘police market activity and protect market integrity.’’

Intrade did not respond to an e-mailed request for comment.

It was unclear whether regulators believe that all trades on Intrade by US investors are illegal. The CFTC said it would not comment further because the matter was in litigation.

Intrade is known for facilitating bets on award shows, weather, and other high-profile events. The prices at which customers are willing to make those bets are cited as informal odds.

For example, on Monday the site gave ‘‘Argo’’ a 28.5 percent chance of winning the Oscar for best picture and assigned a 19 percent chance that the United States or Israel would launch an airstrike against Iran by June 30.

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